Correct me if I'm wrong, but doesn't android display a rather ennerving "someone might be spying on you" warning when custom root certs are installed? I'm looking forward to the reactions when every (android-using) citizen of the country student gets that warning.

They installed the cert because they've been told to and because likely "the internet doesn't work" when they don't. But that doesn't imply they know what a root certificate actually does or what the consequences of adding new root certs are.